Not sure if I experienced a regression in the latest EA on my Xperia X. It seems that the ofono process had died. I noticed it yesterday, when I wanted to look up something via the mobile data and only got a generic error (something like "issues with the mobile connection") but no data connection. Had to completely reboot the phone (Restarting the network connection in the Utilities Tool did not help) to get it working again. Immediately after the reboot, I got SMS and call notifications from my provider from the previous day, so this seems to be a long term issue.
I suspect it to be an ofono issue because Wifi was working fine all the time. There is a similar bug report on TJC about ofono crashing when switching back from flight mode.
I will monitor the issue and open a bug report if this happens again. Does anyone have similar issues with the current EA? Also, I'm pretty sure there has been a similar issue like this before, hasn't there?